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Income Taxes - Schedule of Reconciliation of Actual Income Taxes to Income Taxes at Expected United States Federal Corporate Income Tax Rate (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Income Tax Disclosure [Abstract] |  |  |  |
Federal statutory rate | 35.00% | 21.00% | 24.30% | 34.00%
Tax (benefit) expense at the federal statutory rate |  | $ (784) | $ 1,342 | $ 3,340
Effect of permanent book-tax differences |  | 272 | 75 | 340
State tax provision |  | 31 | 76 | 100
Valuation allowance for net deferred tax assets |  | 1,682 | 617 | (1,610)
Uncertain tax items |  | 74 | (3,013) | 350
Tax rate differential |  | 150 | 1,107 | (776)
Other items |  | 5 | 16 | 0
Total provision |  | $ 1,430 | $ 220 | $ 1,744

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- Definition Amount of income tax expense (benefit) for continuing operations, discontinued operations, other comprehensive income, and items charged (credited) directly to shareholders' equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318 + Details
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